I don't participate in the FB ecosystem at all and do not want to use an app that forces me in - either through a mandatory requirement (..you must now have an FB account to use Waze..), or simply because I use the app and therefore FB can identify me by Waze nickname, forum account details and current location.
Facebook's long and troubled history with personal privacy, and tendency to combine disparate bits of personal data in ways that some people find invasive.
